CN105927297A - Copious cooling liquid air energy storage system capable of utilizing heat circularly - Google Patents
Copious cooling liquid air energy storage system capable of utilizing heat circularly Download PDFInfo
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- CN105927297A CN105927297A CN201610423445.XA CN201610423445A CN105927297A CN 105927297 A CN105927297 A CN 105927297A CN 201610423445 A CN201610423445 A CN 201610423445A CN 105927297 A CN105927297 A CN 105927297A
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- air
- heat
- energy
- energy storage
- liquid air
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/02—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-expansion type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0012—Primary atmospheric gases, e.g. air
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention provides a copious cooling liquid air energy storage system capable of utilizing heat circularly. By means of low-temperature heat (about 122 DEG C) of reheated conduction oil, air at an inlet of a compressor is preheated to the temperature of 15-100 DEG C, and accordingly air at an outlet of the compressor can reach a high temperature grade (about 330 DEG C) under the small pressure ratio condition. Therefore, the energy storage efficiency of the energy storage system is effectively improved, and the operation cost is reduced advantageously.
Description
Technical field
The present invention relates to the technical field of energy storage of cryogenic liquefying air, be specifically related to the deep cooling of circulation heat
Liquid air energy-storage system.
Background technology
Cryogenic liquefying air energy storage technology refers to, in the network load low ebb phase, electric energy is used for compressed air,
By air high pressure sealing at abandoned well, the seabed air accumulator of sedimentation, cavern, expired Oil/gas Well or new
Build in gas storage well, in the energy storage mode of network load peak period release compressed air pushing turbine generating,
Liquid air energy-storage system has that stored energy capacitance is relatively big, energy storage cycle length, take up an area and little do not rely on geography
The advantages such as condition.During energy storage, air is compressed, cools down and liquefy by electric energy, during storage is somebody's turn to do simultaneously
The heat energy of release, is used for when releasing energy adding hot-air；When releasing energy, liquid air is pressurized, gasification, pushes away
Dynamic expansion power generation unit generating, stores the cold energy of this process simultaneously, cools down air when energy storage.
But existing deep cooling liquid air energy storage systems there is also following defect: cryogenic liquefying air energy storage
System is easily subject to the impact of the many factors such as environment, equipment and energy loss and causes it to circulate
Energy storage efficiency is relatively low, and operating cost is higher, it is therefore necessary to provide the deep of a kind of high-effect, low cost
Cold liquid air energy-storage system.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome cryogenic liquefying air in prior art
Energy storage efficiency is circulated relatively low, the technological deficiency that operating cost is higher present in energy-storage system.
For solving above-mentioned technical problem, the present invention provides a kind of deep cooling liquid air energy storage circulated by heat
System, including:
Air compressor unit, including some grades of air compressors, makes low-temp low-pressure air boil down to high temperature
The gaseous air of high pressure；
Heat-energy recovering apparatus, is collected the heat energy produced in air compression process；
Liquid air storage tank, stores the liquid air of described HTHP；
Gasification installation, makes the gaseous air that liquid air gasification is HTHP of described HTHP,
And receive the heat energy stored in described heat-energy recovering apparatus；
Cold energy retracting device, gasifies to liquid air and receives for the cold energy produced during gaseous air
Collection, and by during cold energy release to gaseous air boil down to liquid air；
Expanding unit, the described gaseous air obtained through liquid air gasification enters in described expansion unit
Driving described expansion unit to do manual work, in described expansion unit, the gaseous air of output reclaims input to described
Air compressor unit；
Also include the preheating device that described air compressor unit porch is preheated, described pre-hot charging
Put and the inlet temperature of described air compressor unit is preheated to 15-100 DEG C.
In the deep cooling liquid air energy storage systems of above-mentioned circulation heat, described preheating device includes heat exchange
Device, the heat transferring medium in described heat exchanger is reheating conduction oil.
In the deep cooling liquid air energy storage systems of above-mentioned circulation heat, described air compressor unit is two
The recycle compressor that platform is in parallel, wherein, uses described at the air intake of a described recycle compressor
Preheating device preheats, and the high temperature air of its output is for the gasification of described gasification installation.
In the deep cooling liquid air energy storage systems of above-mentioned circulation heat, another in described air compressor unit
One described recycle compressor is indirect-cooling compressor.
In the deep cooling liquid air energy storage systems of above-mentioned circulation heat, described air presses group includes two
Bar air pipe line, described air pipe line is provided with the choke valve controlling air mass flow.
In the deep cooling liquid air energy storage systems of above-mentioned circulation heat, described energy input devices
For motor, it converts electrical energy into mechanical energy and drives described first air compression plant and the second sky
Air pressure compression apparatus and liquefying plant acting.
In the deep cooling liquid air energy storage systems of above-mentioned circulation heat, described expansion unit is at least two
Level expands unit, and the force value between the most each decompressor is identical or different.
Technical solution of the present invention, has the advantage that
In the deep cooling liquid air energy storage systems of the circulation heat that 1, the present invention provides, after it utilizes reheating
Low Temperature Thermal (about 122 DEG C) preheating suction port of compressor air in conduction oil to 15 DEG C-100 DEG C, thus
Make compressor outlet air can reach higher temperature in the case of little pressure ratio and sample (about 330 DEG C
Left and right), thus effectively raise the energy storage efficiency of the energy-storage system of the present embodiment, contribute to reducing fortune
Row cost.
In the deep cooling liquid air energy storage systems of the circulation heat that 2, the present invention provides, described pre-hot charging
Putting and include heat exchanger, the heat transferring medium in described heat exchanger is reheating conduction oil, as it is shown in figure 1, institute
State heat exchanger and be arranged on the porch of air compression plant, so arrange and be advantageous in that, by circulation
Reduce compressor delivery pressure with thermal flow process, reduce power consumption of compressor, improve the utilization of waste heat
Efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, under
The accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described by face,
It should be evident that the accompanying drawing in describing below is some embodiments of the present invention, general for this area
From the point of view of logical technical staff, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Obtain other accompanying drawing.
Fig. 1 is the principle of the deep cooling liquid air energy storage systems of the circulation heat in the embodiment of the present invention 2
Schematic diagram.
Description of reference numerals:
1-air compressor unit；3-heat-energy recovering apparatus；4-liquid air storage tank；5-gasification installation；
6-cold energy retracting device；7-expands unit；8-heat exchanger.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in bright, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly fall into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, " left ",
Orientation or the position relationship of the instruction such as " right ", " vertically ", " level ", " interior ", " outward " are based on attached
Orientation shown in figure or position relationship, be for only for ease of description the present invention and simplify describe rather than
Instruction or the hint device of indication or element must have specific orientation, with specific azimuth configuration and
Operation, is therefore not considered as limiting the invention.Additionally, term " first ", " second ", "
Three " it is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, art
Language " is installed ", " being connected ", " connection " should be interpreted broadly, and connects, also for example, it may be fixing
Can be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；
Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two element internals
Connection.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
As long as additionally, technical characteristic involved in invention described below difference embodiment that
The conflict of not constituting between this just can be combined with each other.
Embodiment 1
The present embodiment provides a kind of deep cooling liquid air energy storage systems circulated by heat, below in conjunction with Fig. 1
The energy-storage system of the present embodiment is described in detail, comprising:
Air compressor unit 1, including some grades of air compressors, makes low-temp low-pressure air boil down to high temperature
The gaseous air of high pressure；
Heat-energy recovering apparatus 3, is collected the heat energy produced in air compression process；
Liquid air storage tank 4, stores the liquid air of described HTHP；
Gasification installation 5, makes the gaseous air that liquid air gasification is HTHP of described HTHP,
And receive the heat energy stored in described heat-energy recovering apparatus 3；
Cold energy retracting device 6, gasifies to liquid air and receives for the cold energy produced during gaseous air
Collection, and by during cold energy release to gaseous air boil down to liquid air；
Expanding unit 7, the described gaseous air obtained through liquid air gasification enters described expansion unit 7
Middle driving described expansion unit 7 is done manual work, and in described expansion unit 7, the gaseous air of output reclaims input
To described air compressor unit 1；
Also include the preheating device that described air compressor unit 1 porch is preheated, described preheating
The inlet temperature of described air compressor unit 1 is preheated to 15-100 DEG C by device.
Above-mentioned embodiment is the core technology scheme of the present embodiment, and it utilizes after reheating in conduction oil
Low Temperature Thermal (about 122 DEG C) preheating suction port of compressor air is to 15 DEG C-100 DEG C, so that compressor
Outlet air can reach higher temperature taste (about about 330 DEG C) in the case of little pressure ratio, from
And effectively raise the energy storage efficiency of the energy-storage system of the present embodiment, contribute to reducing operating cost.
Specifically, described preheating device includes that heat exchanger 8, the heat transferring medium in described heat exchanger 8 are
Reheating conduction oil, as it is shown in figure 1, described heat exchanger 8 is arranged on the porch of air compression plant 1,
So arrange and be advantageous in that, reduce compressor delivery pressure by circulation thermal flow process, reduce
Power consumption of compressor, improves the utilization ratio of waste heat.
In the cryogenic liquefying air energy storage systems of the storage tank boosting type of the present embodiment, energy input devices,
I.e. motor, it converts electrical energy into mechanical energy and drives the first air compression plant and the second air pressure
Compression apparatus does work, and wherein the first air compression plant is low pressure compressor；Second air compression fills 4 and is
High pressure compressor.Specifically, the first air compression plant is to being driven gaseous state empty by energy input devices
Gas carries out one stage of compression, and now the air through one stage of compression is still gaseous state, then by after one stage of compression
Gas purified by air cleaning unit after carry out two-stage compression, the second air compression plant and liquid again
Air after purifying is compressed into liquid air in the environment of cryogenic high pressure by gasifying device, and by liquid
State air trapping, stores to liquid air storage tank 4.While two-stage compression process is carried out, heat
Can be collected storing to the heat energy produced in two-stage compression process by retracting device.Energy input devices institute
The mechanical energy consumed, converts for the interior energy of liquid air, this completes the storage process of energy.
The release process of energy is:
Liquid air is stored in liquefied air storage tank 4, and liquid air is exported by equipment such as cyropumps
To gasification installation 5, described gasification installation 5 includes evaporimeter etc..Gasification installation 5 can be to liquid
Air pressurized, thus promote liquid air generating gasification to expand, the heat energy collected in thermal energy storage process is handed over
Give liquid air, thus promote the lifting of liquid air gasification rate, and improve the enthalpy of gaseous air
Value, improve mechanical efficiency and the dynamic responding speed of described gaseous air, liquid air gasification same
Time, cold energy retracting device 6 cold energy produced to liquid air gasification is collected, and cold energy reclaims dress
Put the cold energy collected in 6 and can be used in thermal energy storage process, the first air compression plant and the second air
In compression set.Further, after liquid air is gasificated into gaseous state, it is possible to drive expansion unit 7 swollen
Swollen acting, thus complete exoergic process.
It should be noted that in practical work process, liquid air is complete by repeatedly expansion process
Becoming gasification, such as, the expansion unit 7 used in the present embodiment can also is that as steam turbine, combustion
One in gas-turbine or Stirling-electric hybrid or any two or three.
Obviously, above-described embodiment is only for clearly demonstrating example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also all of embodiment being given
With exhaustive.And the obvious change thus extended out or variation are still in the guarantor of the invention
Protect among scope.
Claims (7)
1. circulate the deep cooling liquid air energy storage systems by heat, including:
Air compressor unit (1), including some grades of air compressors, makes low-temp low-pressure air boil down to
The gaseous air of HTHP；
Heat-energy recovering apparatus (3), is collected the heat energy produced in air compression process；
Liquid air storage tank (4), stores the liquid air of described HTHP；
Gasification installation (5), the gaseous state that liquid air gasification is HTHP making described HTHP is empty
Gas, and receive the heat energy stored in described heat-energy recovering apparatus (3)；
Cold energy retracting device (6), gasifies to liquid air to enter for the cold energy produced during gaseous air
Row is collected, and by during cold energy release to gaseous air boil down to liquid air；
Expanding unit (7), the described gaseous air obtained through liquid air gasification enters described decompressor
Group (7) drive described expansion unit (7) do manual work, the gaseous state of output in described expansion unit (7)
Air reclaims input to described air compressor unit (1)；
It is characterized in that:
Also include the preheating device that described air compressor unit (1) porch is preheated, described pre-
The inlet temperature of described air compressor unit (1) is preheated to 15-100 DEG C by thermal.
The deep cooling liquid air energy storage systems of circulation the most according to claim 1 heat, its feature
It is:
Described preheating device includes that heat exchanger (8), the heat transferring medium in described heat exchanger (8) are reheating
Conduction oil.
The deep cooling liquid air energy storage systems of circulation the most according to claim 1 and 2 heat, its
It is characterised by:
Described air compressor unit (1) is two recycle compressors in parallel, wherein, follows described in one
Using described preheating device to preheat at the air intake of ring compressor, the high temperature air of its output is used
Gasification in described gasification installation (5).
The deep cooling liquid air energy storage systems of circulation the most according to claim 3 heat, its feature
It is:
In described air compressor unit (1), another described recycle compressor is indirect-cooling compressor.
The deep cooling liquid air energy storage systems of circulation the most according to claim 4 heat, its feature
It is:
Described air presses group (1) includes two air pipe lines, and described air pipe line is provided with control
The choke valve of air mass flow.
The deep cooling liquid air energy storage systems of circulation the most according to claim 1 heat, its feature
It is:
Described energy input devices is motor, and it converts electrical energy into mechanical energy and drives described
First air compression plant and the second air compression plant and liquefying plant do work.
The cryogenic liquefying air energy storage systems of storage tank boosting type the most according to claim 1, it is special
Levy and be:
Described expansion unit (7) is at least double expansion unit, the pressure between the most each decompressor
It is worth identical or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610423445.XA CN105927297A (en) | 2016-06-16 | 2016-06-16 | Copious cooling liquid air energy storage system capable of utilizing heat circularly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610423445.XA CN105927297A (en) | 2016-06-16 | 2016-06-16 | Copious cooling liquid air energy storage system capable of utilizing heat circularly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060921A (en) * | 2017-06-16 | 2017-08-18 | 华北电力科学研究院有限责任公司 | The TRT and method of liquefied air energy-storage system |
| CN107749670A (en) * | 2017-09-15 | 2018-03-02 | 广东电网有限责任公司电力科学研究院 | A kind of based superconductive magnetic storage energy and the mixed energy storage system of deep cooling energy storage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107060921A (en) * | 2017-06-16 | 2017-08-18 | 华北电力科学研究院有限责任公司 | The TRT and method of liquefied air energy-storage system |
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| CN107749670A (en) * | 2017-09-15 | 2018-03-02 | 广东电网有限责任公司电力科学研究院 | A kind of based superconductive magnetic storage energy and the mixed energy storage system of deep cooling energy storage |
| CN107749670B (en) * | 2017-09-15 | 2023-07-14 | 广东电网有限责任公司电力科学研究院 | Hybrid energy storage system based on superconducting magnetic energy storage and cryogenic energy storage |
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Address after: 102209 Beijing City, the future of science and Technology City Binhe Road, No. 18, No. Applicant after: Global energy Internet Institute, Inc. Applicant after: State Grid Corporation of China Address before: 102211 Beiqijia Town, Beijing, Changping District, future technology North Zone National Grid hospital Applicant before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Applicant before: State Grid Corporation of China |
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Application publication date: 20160907 |